Sentence examples for proved difficult for a from inspiring English sources

Detection of the misuse of rhGH has proved difficult for a number of reasons.

Vaccine elicitation of protective antibody responses has proved difficult for a number of important human pathogens, including HIV-1.

The chorus was sophisticated and natural, with each following line "cascading onto one another," something that would have proved difficult for a "less skilled vocalist".

That might prove difficult for a new junior senator.

But it could prove difficult for a Romney nominee like Mr. Taylor to win confirmation if Democrats retain a majority in the Senate.

About $483m of the $1.5bn is dependent on dubious income streams, such as higher property tax collections, steep parking ticket fees, and other revenue sources that may prove difficult for a city with rising unemployment and a declining tax base.

Selecting a non-biased, well-balanced source sequence set for a subjective experiment may prove difficult for a single researcher.

It could also prove difficult for a U.S. attorney to obtain a conviction.

Any extended ocean voyage without fresh water or food would prove difficult for a large, warm-blooded (or "homeothermic") mammal, but today many small, nocturnal species of lemur exhibit heterothermy, which allows them to lower their metabolism and become dormant while living off fat reserves.

Regarding matching strategies, it may prove difficult for a similar proportion of matching to be preserved between the two models.

That fast-track timetable might favor Lowe Lintas because it may prove difficult for an agency of the size needed by Burger King to handle such a big assignment to mobilize so quickly.